/*

  * Copyright (C) 2020-2024 Huawei Technologies Co., Ltd. All rights reserved.

  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

package com.huaweicloud.common.util;

import java.nio.charset.StandardCharsets;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

import org.apache.commons.codec.binary.Hex;

public class SecretUtil {
  public static final String HMAC_SHA_256 = "HmacSHA256";

  public static String sha256Encode(String key, String data) {
    try {
      Mac sha256HMAC = Mac.getInstance(HMAC_SHA_256);
      SecretKeySpec secretKey = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8),
          HMAC_SHA_256);
      sha256HMAC.init(secretKey);
      return Hex.encodeHexString(sha256HMAC.doFinal(data.getBytes(StandardCharsets.UTF_8)));
    } catch (Exception e) {
      throw new IllegalArgumentException(e);
    }
  }
}
